The Tennis Racket (a more accurate term would be "Raquet") is a sports accessory used in the Tennis mini-game in Grand Theft Auto V. judging by some of the strange melee weapons which have appeared through out the series, such as the Screwdriver, Chisel and Hockey Stick, the Tennis racket may also become a melee weapon.

Michael, seemingly, neglecting he's loss in a tennis match, which may cause michael to attack the opposing player with it, which is likely since he is known to be violent